Book/Report

FZJ-2018-00696

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Rechenprogramm zur Parametrisierung von Exponential-Sinus-Schwingungen nach der Methode der kleinsten Fehlerquadrate

Busch, M.FZJ* ; Lauer, A.FZJ* ; Schwiegk, H. J.FZJ*

1976
Kernforschungsanlage Jülich, Verlag Jülich

Please use a persistent id in citations: http://hdl.handle.net/2128/16659

Report No.: Juel-1301

Abstract: A fit programme tested in the practice of reactor dynamics, however applicable in general, is described. The parametrization is performed for either damped or undamped sinusoidal oscillations, which are present as a data table in form of distinct data. Thereby it concerns, e. g. time-dependent state variables of reactor physics like neutron flux, Power density, or xenon concentration in the reactor core. The Parameters F$_{o}$ , b, T, t$_{o}$, and $\overline{F}$of the function F(t) = F$_{o}$ $\cdot$ exp ((b(t-t$_{o}$)) $\cdot$ sin ((t-t$_{o}$) $\cdot$ 2$\pi$/T) + $\overline{F}$ are computed iteratively of the data given distinctly by application of the method of the minimum least squares. An analogous algorithm and a subroutine written in PL/1 are introduced. The following properties of the programme are particularly useful for application: - The time-range for parametrization of a curve table is at all selectable. - The programme permeates an independent caIculation of the starting data for the iteration. - An error analysis is performed after the successfully ended iteration.

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Contributing Institute(s):

1. Publikationen vor 2000 (PRE-2000)

Research Program(s):

1. 899 - ohne Topic (POF3-899) (POF3-899)

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Database coverage:

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